Confidence: Medium · Source: FCC ULS · As of 2026-09-09

AD4N

Active

GREENE, SHERRELL R

Location: KNOXVILLE, TN
Class: Amateur Extra
Granted: 2018-08-04
Expires: 2028-08-04
Previous call: K4DSC
FRN: 0004780441

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Vanity availability

Held

Currently held

AD4N is held by an active license; it isn't a vanity slot right now.

Vanity availability dates are computed from FCC §97.19's hold periods: 2 years from the cancellation date for cancelled or terminated licenses, 4 years from the expiration date for expired licenses (2-year renewal grace + 2-year hold).

Callsign genealogy

Full chain →

Previously held by current licensee

K4DSCactive· T
Bethea, Michael DSCgranted 2021-09-18
KO4PMIcancelled· T
Bethea, Michael DSCgranted 2021-04-16cancelled 2021-09-18

Prior holders later became

W4KDDactive· E
COOK, CHRISTOPHER DSCgranted 2016-07-16

License history

0 events

No recorded events.

More vanity slots coming available

From Tennessee

All →

KG4TWC 2026-09-10
KK4LNE 2026-09-10
KK4LNK 2026-09-10
KQ4TPH 2026-09-10
KQ4UUA 2026-09-10

Starting with AD4

All →

AD4ED GA · 2026-12-03
AD4XA SC · 2027-02-01
AD4WN NC · 2027-03-01
AD4EE FL · 2027-03-11
AD4BT NC · 2027-03-15

Full history → Vanity availability → Callsign genealogy →